Methods The automatic infusion alarm device was subtly reformed according to the principal of the character of the spring that the different gravity caused its length to be different.
方法：该输液自动报警器利用了弹簧受力拉升，不同质量的物体使弹簧长度改变不同的原理，巧妙地将弹簧秤进行了改装。
The products should be used with disposable venous infusion setneedle, and usually apply to gravity transfusion.
该产品与一次性使用静脉输液针配套使用，主要用于临床重力式输液。
The products should be used with disposable venous infusion setneedle, and usually apply to gravity transfusion.
该产品与一次性使用静脉输液针配套使用，主要用于临床重力式输液。
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